re-using 2003 member servers in server 2012 essential

I'm building a new network to replace an old SBS 2003 which I do not want to migrate for various reasons.  The plan is to use MS hosted Office 365 including email in WSE2012, so no need for in-house Exchange, but I do want to reuse the 2 member servers from it (both server 2003).  The old network (still online until I get the new one configured) uses 3 servers due to our main CAD application redundant license server scheme.  Beside license serving, server "A" is a BDC, main print server and has a shared raid 5 storage; and, Server "B" is the terminal server where our industry specific resource books are shared to the office using remote desktop.  My questions:
1. Do I first remove them as member server from sbs2003 before joining them to WSE2012?
2. Do I need new cals for the old terminal server - can I even do this & still get cals
3. Is it better to re-install the server2003 in those old servers before I join them to wse2012

Any insights would be appreciated.
ra2jimAsked:
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Peter HutchisonSenior Network Systems SpecialistCommented:
1. Yes, just join it to a Workgroup, reboot, then rejoin to WSE2012 domain and reboot.
2. You will probably need new CALs as the 2003 ones will probably not work on 2012
3. Not really, unless you need to tidy them up.

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